CN211874870U

CN211874870U - Novel unilateral bolt

Info

Publication number: CN211874870U
Application number: CN202020415267.8U
Authority: CN
Inventors: 陈玉震; 王健; 孙德山; 薛成名; 王中才
Original assignee: Shandong Guoshun Construction Group Co Ltd
Current assignee: Shandong Guoshun Construction Group Co Ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-11-06
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a novel unilateral bolt, including bolt main part, nut, packing ring, interior packing ring and locating part, the screw rod free end activity of interior packing ring and bolt main part is pegged graft, prevents that interior packing ring pivoted locating part from passing behind the bolt main part free end and interior packing ring cooperation joint, nut and bolt main part screw-thread fit, still be equipped with the packing ring between the locating part outside and the nut. The installation of the unilateral bolt has low requirement on the technical level of workers, and the connection quality can be ensured. Meanwhile, the components of the novel unilateral bolt are easy to process, low in manufacturing cost and easy to produce in batches, and popularization and application of building structure types such as prefabricated steel structures can be greatly promoted, so that considerable social and economic benefits are generated.

Description

Novel unilateral bolt

Technical Field

The utility model belongs to the technical field of the engineering technique and specifically relates to a novel unilateral bolt.

Background

The bolt connection is widely applied to steel structures and steel-concrete combined structure systems due to convenient installation and construction, good stress performance and attractive building shapes. A large number of post-earthquake investigations show that, compared with welding joints, bolt joints are damaged less, the degree is lighter and the earthquake resistance is good in earthquake. With the popularization of the fabricated steel structure building, the advantages of bolt connection are further highlighted, and the application requirements are further expanded. The steel pipe has attractive cross section and good mechanical property, is very suitable for serving as a column component of a building structure, but the sealing property of the cross section of the steel pipe causes difficult installation and screwing of the bolt, a mounting hole with a larger diameter is generally required to be formed in a factory in advance, and the mounting hole is repaired and welded after being screwed, so that great difficulty is brought to the application of bolt connection. In addition, when the steel pipe member is applied to a structure with lower strength, the wall thickness of the steel pipe column tends to be smaller, and the local pressure problem of bolt connection is also more prominent.

As a novel fastener, the unilateral bolt has the characteristics of unilateral installation, unilateral tightening, convenient construction and the like, and can solve the problem that the common high-strength bolt is difficult to be applied to a closed cross-section component. However, the unilateral bolt which is put into practical engineering application at present is high in manufacturing cost, high in application cost, complex in installation process, difficult to control quality and large in potential safety hazard, so that the popularization and the application of the unilateral bolt are limited. With the popularization of national fabricated steel structure buildings and the improvement of social development on the requirement of construction efficiency, a unilateral bolt which is low in manufacturing cost, simple in production and good in stress performance is urgently needed at present, and the unilateral bolt with good performance can increase the local pressure area of the bolt to a column wall so as to improve the local pressure performance of a thin-wall steel pipe column.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel unilateral bolt has solved the closed cross-section and has been difficult to use bolted connection's a difficult problem. The installation of the unilateral bolt has low requirement on the technical level of workers, and the connection quality can be ensured. Meanwhile, the components of the novel unilateral bolt are easy to process, low in manufacturing cost and easy to produce in batches, and can greatly promote popularization and application of building structure types such as assembled steel structures and the like, so that considerable social and economic benefits are generated.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a novel unilateral bolt, includes bolt main part, nut, packing ring, interior packing ring and locating part, interior packing ring is pegged graft with the screw rod free end activity of bolt main part, prevents that interior packing ring pivoted locating part from passing behind the bolt main part free end and interior packing ring cooperation joint, nut and bolt main part screw-thread fit, still be equipped with the packing ring between the locating part outside and the nut.

Further, the inner gasket is an oblong gasket body, and a through hole through which a screw rod penetrates is formed in the middle of the gasket body.

Further, the locating part includes spacing main part, draw-in groove and through-hole, the inboard middle part of spacing main part is equipped with the draw-in groove with interior packing ring complex, be equipped with the through-hole that the screw rod passed in the draw-in groove.

Further, the size of the plane outer edge of the limiting main body is the same as that of the plane outer edge of the inner gasket; the draw-in groove width is the same with interior packing ring width, is "ten" font after spacing main part and interior packing ring joint, and the middle part through-hole is coaxial.

Further, the limiting piece is matched with a long round hole in a box-type column wallboard.

The utility model has the advantages that:

the utility model discloses an unilateral bolt passes through the locating part and uses with the cooperation of interior packing ring, and the position and the angle of packing ring in the draw-in groove of locating part is fixed after the installation to the safety and the stability of connection are guaranteed, and the box post can also be assisted simultaneously and the local pressure that the interior packing ring transmitted is born, improves the local stability in compression district of box post. In addition, all the components of the unilateral bolt are complete pieces, are tightly combined with each other, do not have the risk of separation even under the action of an earthquake, and are safe and reliable. The force transmission path between the components is clear, and the mechanical property of the node is good.

Drawings

FIG. 1 is a diagram illustrating the usage of the present invention;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a partial cross-sectional view of the utility model after installation;

FIG. 4 is a schematic view of the construction of an oblong inner gasket;

FIG. 5 is a schematic structural diagram of a limiting member;

FIG. 6 is a view showing a state in which the limiting member is fitted to the inner washer;

FIG. 7 is a right side view of FIG. 6

FIG. 8 is a view showing the state in which the bolt body and the inner washer are fitted into the oblong hole of the box-shaped column;

FIG. 9 is a schematic structural view of a connecting plate;

fig. 10 is a schematic view of the internal structure of the box-type column in use according to the present invention.

In the figure:

1 box type column wall plate, 11 long round holes, 2 connecting plates, 3 bolt main bodies, 4 inner gaskets, 5 limiting pieces, 51 limiting main bodies, 52 clamping grooves, 53 through holes, 6 gaskets and 7 nuts.

Detailed Description

The following detailed description of a novel single-side bolt of the present invention is made with reference to the accompanying drawings.

As shown in fig. 1 to 9, the utility model discloses a novel unilateral bolt uses with the mounting hole cooperation of being connected and reserving on the plate, and its structure includes bolt main part 3, nut 7, packing ring 6, interior packing ring 4 and locating part 5, interior packing ring 4 pegs graft with the screw rod free end activity of bolt main part, and interior packing ring 4 passes from bolt main part free end. Prevent that interior packing ring 4 pivoted locating part 5 from passing behind the bolt main part free end and interior packing ring 4 cooperation joint, nut 7 and 3 screw-thread fit of bolt main part, be equipped with box column wallboard 1 and connecting plate 2 between locating part 4 and the nut 7, be equipped with packing ring 6 between nut 7 and the connecting plate 2. The limiting part 5 comprises a limiting main body 51, a clamping groove 52 and a through hole 53, the clamping groove 52 matched with the inner gasket 4 is arranged in the middle of one side of the limiting main body 51, and the through hole 53 through which a screw rod penetrates is arranged in the clamping groove 52. The limiting piece 5 is matched with a long round hole 11 on the box-type column wallboard 1.

As shown in figure 4, the inner gasket 4 is an oblong pad body, the plane size of which is the same as the size of the opening of the box-type column wallboard 1, and the inner gasket can penetrate through the opening of the box-type column wallboard. The middle part of the cushion body is provided with a through hole through which the screw rod passes, and the size of the through hole considers the installation allowance.

The limiting main body 51 is in an oblong shape, the plane size of the limiting main body is the same as the size of the opening of the box-shaped column wall plate 1, the plate thickness of the limiting main body is equal to two times of the plate thickness of the inner gasket 4, the width of the clamping groove in the limiting main body 51 is the same as the width of the inner gasket 4, the height of the limiting main body is the same as the plate thickness of the inner gasket 4, and the inner gasket is clamped on the rear outer surface. As shown in fig. 6 and 7, the limiting main body and the inner washer are clamped and then are in a cross shape, and the through hole in the middle is coaxial, so that the limiting main body and the inner washer can be tightly clamped and matched after being inserted into the screw rod, and the movement of the inner washer is limited.

The slotted hole that is the same with locating part and interior packing ring planar dimension is reserved on the box post wallboard, and during the installation guarantee that interior packing ring and locating part can pass from the slotted hole, and the locating part is the twice of box post wallboard thickness, and the thickness of interior packing ring is the same with box post wallboard thickness, and after interior packing ring and locating part joint cooperation, the surface parallel and level of interior packing ring and locating part.

The installation process is as follows: firstly, a bolt main body 3 and an inner gasket 4 are parallel to a long round hole 11 and inserted into a box column, the bolt main body and the inner gasket are rotated for 90 degrees to enable the inner gasket to be perpendicular to the long round hole, then a limiting piece 5 penetrates through the free end of a screw rod on one side of the box column, the limiting piece 5 is parallel to the long round hole 11 and inserted, one side of the limiting piece 5 with a groove extends into the long round hole 11, the inner gasket 4 is clamped through the groove, the limiting piece and the inner gasket are in a cross shape, the inner gasket is fixed at the moment, the inner gasket cannot move everywhere under the limitation of the limiting piece, then a connecting plate 2 and a gasket 6 are sequentially installed from the free end of the screw rod, and finally the bolt and the. The position and the angle of the inner gasket are fixed through the limiting part, so that the connection safety and stability are guaranteed, meanwhile, the auxiliary box-type column bears the local pressure transmitted by the inner gasket, and the stability of a local compression area of the box-type column is improved.

The utility model discloses an unilateral bolt can be but not limited to in being applied to steel construction, steel-concrete composite structure's connected node. The connecting plate is provided with a mounting hole in advance as required, the box-shaped column wall plate is provided with a long circular hole, and the hole diameter is determined according to the sizes of the bolt, the inner gasket and the limiting main body. The connecting plate is provided with a round hole, and the aperture is determined according to the diameter of the screw. The problem of closed cross-section be difficult to use bolted connection is solved, and the installation is simple, and low to workman's technical merit requirement, can guarantee the quality of connecting. Meanwhile, the components of the novel unilateral bolt are easy to process, low in manufacturing cost and easy to produce in batches, and popularization and application of building structure types such as prefabricated steel structures can be greatly promoted, so that considerable social and economic benefits are generated. In addition, all the components of the unilateral bolt are complete pieces, are tightly combined with each other, do not have the risk of separation even under the action of an earthquake, and are safe and reliable. The force transmission path between the components is clear, and the mechanical property of the node is good.

The foregoing is merely illustrative of some of the principles of the present invention and the description is not intended to limit the invention to the specific constructions and applications shown, so that all modifications and equivalents that may be utilized are within the scope of the invention.

Other technical features than those described in the specification are known to those skilled in the art.

Claims

1. The utility model provides a novel unilateral bolt, characterized by, includes bolt main part, nut, packing ring, interior packing ring and locating part, the screw rod free end activity of interior packing ring and bolt main part is pegged graft, prevents that interior packing ring pivoted locating part from passing behind the bolt main part free end and interior packing ring cooperation joint, nut and bolt main part screw-thread fit, still be equipped with the packing ring between the locating part outside and the nut.

2. The novel unilateral bolt according to claim 1, wherein the inner washer is an oblong washer body, and a through hole through which a screw rod passes is formed in the middle of the washer body.

3. The novel unilateral bolt according to claim 2, wherein the limiting member comprises a limiting body, a slot and a through hole, the middle part of the inner side of the limiting body is provided with the slot matched with the inner washer, and the slot is internally provided with the through hole for the screw rod to pass through.

4. The novel unilateral bolt according to claim 3, wherein the limiting body is the same size as the planar outer edge of the inner washer; the draw-in groove width is the same with interior packing ring width, is "ten" font after spacing main part and interior packing ring joint, and the middle part through-hole is coaxial.

5. The novel unilateral bolt according to claim 1, wherein the retaining member is engaged with an oblong hole in the box-type column wall plate.